Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) Smart access system with push-button start (for Start Function) data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

CHECK DLC3

(a) Check the DLC3.

Click here

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

    Terminals Of Ecu
    TERMINALS OF ECU CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (a) Disconnect the A74, R1 and J41 certification ECU (smart key ECU assembly) connectors. (b) Measure the voltage and resistance acco ...

    Dtc Check / Clear
    DTC CHECK / CLEAR NOTICE: When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Automatic Transaxle Fluid: Replacement
    REPLACEMENT PROCEDURE 1. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH Click here 2. REMOVE NO. 3 ENGINE UNDER COVER Click here 3. REMOVE FRONT FENDER APRON SEAL LH Click here 4. REPLACE AUTOMATIC TRANSAXLE FLUID (a) Lift the vehicle. [#1] NOTICE: Set the vehicle on a lift so that the v ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning Unit: Reassembly
    REASSEMBLY PROCEDURE 1. INSTALL NO. 1 COOLER THERMISTOR Click here 2. INSTALL NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY (a) Install a new No. 1 cooler evaporator sub-assembly with No. 1 cooler thermistor to the upper heater case. NOTICE: When the No. 1 cooler evaporator sub-assembly is removed, make ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2025 Copyright www.lexusrx.net
    0.0155